Our client, a prominent player in the defence and security sector, is currently seeking an IT Infrastructure Engineer to join their team on a permanent basis. This role is based in Bristol and involves working on client sites across the Southwest. The successful candidate will need to obtain or hold SC clearance.Job Requirements:Strong experience with core Microsoft infrastructure including Active Directory, DNS, DHCP, and Windows ServerProficiency in virtualisation platforms such as VMware or Hyper-VExperience in site-to-site networking, including VPNs, subnets, and VLANsExpertise in firewalls and secure boundary designKnowledge of patch management and vulnerability remediationAware of Cyber Essentials and MoD/Defence security compliance standardsComfortable working in air-gapped and secure environmentsKey Responsibilities:Full lifecycle IT infrastructure delivery, including design, deployment, configuration, documentation, and supportHands-on work with Windows Server, Active Directory, Group Policy, DNS/DHCP, virtualisation platforms (VMware, Hyper-V), firewalls (e.g., Cisco ASA, Fortinet, Palo Alto), and networking (site-to-site VPNs, LAN/WAN configuration)Perform regular health checks and system hardening aligned with cyber security standardsLiaise with clients across the Southwest, requiring local travelContribute to strategic planning with the Business Unit Director and Delivery TeamsSupport the setup and improvement of project delivery standards, documentation, and bes